Which areas in Seoul do foreign visitors usually choose for beauty tourism?

Hi everyone, I'm Tien from Vietnam. I'm planning a trip to Seoul to try out some skincare and aesthetic treatments, but I'm a bit confused about where to stay. I've heard many people mention Gangnam and Apgujeong as hot spots for beauty, but I'm not sure which one is actually more convenient for a foreigner like me.

I have a few questions: Which area has the most beauty salons and cosmetic clinics? Is it easy to find accommodation there? How do prices compare to other areas? I have foreign friends who are also going soon, so I want to choose a place that's both convenient and has a good vibe.

Have any of you been there before? Where should I stay? Are there any other areas besides these two that you recommend? Thanks everyone! 😊